Troubleshooting - Pentair MYERS MSC133 Manual Del Usuario

Troubleshooting

Risk of electrical shock. Unplug the pump before touching it or servicing it.
Symptom Probable Cause(s)
Pump is not plugged in.
Blown fuse.
Low line voltage.
Pump won't start
or run.
Defective motor.
Defective float switch.
Clogged or jammed Impeller.
Backflow of water from piping.
Pump starts and
stops too often.
Faulty switch.
Defective switch.
Restricted discharge (obstacle or
Pump won't
ice in the piping).
shut off.
Restricted intake screen.
Low line voltage.
Debris caught in the impeller.
Worn or defective parts or
Pump operates
plugged impeller.
but delivers little
or no water.
Check valve installed without
vent hole
Restricted intake screen.
Check valve is installed either
backward or upside down.
For parts or assistance, call Customer Service at 1-888-987-8677
Corrective Action
Make sure the pump is plugged into a proper outlet.
Replace the fuse with a fuse of proper size.
Check the size of the wiring on the circuit feeding the pump and
from the main switch on the property. If everything is OK, contact
your power company or hydro authority.
Replace the pump.
Replace the float switch.
If the impeller won't turn, unplug the pump, remove the lower
pump body, and locate the source of the binding. Replace the
impeller if necessary.
Install or replace the check valve.
Replace the switch.
Replace the switch, after first checking that switch is functional.
Unplug the pump, remove it from the sump, and clean the pump
and piping.
Unplug the pump, remove it from the sump, and clean the intake
screen and impeller.
If the voltage is below 110 volts, check the size of the wiring
from the main switch on the property. If OK, contact your power
company or hydro authority.
Remove the pump and clean out the impeller.
Clean the impeller if it's plugged; replace the impeller if
necessary; otherwise replace the pump.
Drill a 1/8" (3mm) dia. hole between the pump discharge and
the check valve (1-2" above the pump discharge and below the
waterline).
Remove the pump and clean out the intake screen.
Be sure the check valve is installed correctly (the flow arrow
should point away from the pump).
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